METHOD OF FILTER FOR REMOVING NOISE

摘要

PURPOSE: A method of manufacturing a noise removing filter is provided to obtain high magnetic permeability while retaining excellent adhesive properties with an upper magnetic body and excellent insulating properties and breakdown voltage properties. CONSTITUTION: A lower magnetic body(110) is prepared. The lower magnetic body comprises conductive patterns(121, 122), an insulating layer(123) for covering the conductive patterns, and IO stud terminals for electrically inputting and outputting electricity to and from the conductive patterns. A recognizable portion is disposed on upper surfaces of the IO stud terminals. An upper magnetic body is disposed on the recognizable portion and the insulating layer. The upper magnetic body is polished. The recognizable portion is removed such that the level of the upper surface of the upper magnetic body is higher than levels of the IO stud terminals.